I see Andrea's message only in the quote, he's permanently on my ignore list (the only one).
I see that he's trying to provoke (still?
it's a long story boys, a sort of persecution you don't know...
), misunderstanding what I write.
Anyway, for the other people around it, I try to use this for some considerations about the sound of the Sonys: the detail of the Sa1000 is not forced, is very clean and somewhat smooth. Not "in your face", but "in the air".
I've heard also the SA5000 on my setup and the Qualia on a "dream" setup driven by the Leben CS600 integrated amp (wonderful combo). Those headphones share many qualities (= similar transducer technologies).
I've always thought that the SA5k have one of the best transducer around "in potential", but not totally "damped" in some peaky mid-high range.
Otherways, SA5k and Qualia (and Sa1k too), have the detail and speed of an electrostatic headphone, with the dynamic of a dynamic (sorry for the repetition
). Not bad, not bad at all, don't you think?
That said....
The Sa1K has a strong and surprising capacity to bring out in a very easy and direct way also the minor nuances of the expression of the player. Listen to a good recorded solo acoustic/classical guitar with the SA1K: wonderful experience, maybe in this particular case one of the most "expressive" I've heard. And the very huge but also very focalized and proportioned soundstage add dimension and space in which instruments can express their changes and their evolving sounds.
But one have to admit that with a full orchestra or with an electri bass the body is not "realistic". So I think that these headphones have spent more time in the labs than on the ears of the engineers. But the lab's achievement is very very good and very important for further and future development.
Moreover, as I've said, there is Music in there, only presented in a very personal way. The SA1k seems to caress the sound, to expand them in the air without loosing focalization on any sound.
The sometime peaky mids and the "strange bass" is the cons of this presentation, but they have a very strong personality that made them overall very good headphones.
I think you can play in combos with them and I also think that coupled with a tube Leben CS600 and helped with the first step of very good "bass boost" implemented in that amp, the Sa1K can have a really wonderful sound.
bye
Andrew